I think the way you need to go around the issue is to collect tracebacks. These are the instructions.
Plug a computer directly connected to the Monitor Port with the RS232 cable and open a hypertrm window when the computer reboots it will generate tracebacks of the reboot. Copy those tracebacks and send them to TAC so that they can analyze the data and perhaps provide you with a resolution for your case.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...